package com.demo.springcloud.controller;



import com.demo.springcloud.entities.CommonResult;
import com.demo.springcloud.entities.Payment;
import com.demo.springcloud.lb.LoadBalancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @author :chenjie
 * @date :Created 2022/11/1 22:29
 */
@RestController
@Slf4j
public class OrderController
{
    //public static final String PAYMENT_URL = "http://localhost:8001";

    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

    @Resource
    private RestTemplate restTemplate;

    @Resource
    private LoadBalancer loadBalancer;
    @Resource
    private DiscoveryClient discoveryClient;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment)
    {
        return restTemplate.postForObject(PAYMENT_URL +"/payment/create",payment, CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id)
    {
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
    }




    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> getPayment1(@PathVariable("id") Long id){
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL+"/payment/get/"+id, CommonResult.class);
        if(entity.getStatusCode().is2xxSuccessful()){
            return entity.getBody();
        }else {
            return new CommonResult<>(400,"操作失败");
        }
    }


    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB(){
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");//获取这个名称的服务
        if(instances==null||instances.size()<=0){
            return null;
        }
        ServiceInstance serviceInstance=loadBalancer.instance(instances);//传入服务
        URI uri = serviceInstance.getUri();
        return restTemplate.getForObject(uri+"/payment/lb",String.class);


    }
//    @GetMapping(value = "/consumer/payment/lb")
//    public String getPaymentLB()
//    {
//        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
//
//        if(instances == null || instances.size() <= 0)
//        {
//            return null;
//        }
//
//        ServiceInstance serviceInstance = loadBalancer.instances(instances);
//        URI uri = serviceInstance.getUri();
//
//        return restTemplate.getForObject(uri+"/payment/lb",String.class);
//
//    }
//
    // ====================> zipkin+sleuth
    @GetMapping("/consumer/payment/zipkin")
    public String paymentZipkin()
    {
        String result = restTemplate.getForObject("http://localhost:8001"+"/payment/zipkin/", String.class);
        return result;
    }
}
